Shunning of inactive ones is a bit hit and miss, I would say. You'll always get some who will say "hi" and some who will panic because they're not sure what to do and some who are outrightly self righteous and shun to their heart's content.
My own experience is that I get polite greetings and the odd text message from people who used to be close friends. But the aim is always to get me back to the meetings. Would they want to arrange a trip to the pub or cinema just to hang out? Probably not - unless it was also a backdoor method of trying to get me back to the hall.
That said, I do get the occasional letter from two dear older sisters in my old congregation. One of them always makes a point of inviting me around for coffee and cake and tells me that her husband (who is not a witness) says "hi".
My immediate family, to their credit, are playing the game very well and haven;t shunned me and don't ask me about my lifestyle. But the relationship has changed and not positively. My mum blames "bad association" for my spiritual "demise"...
The bottom-line is, shunning or no shunning, we ARE viewed negatively if we leave. It's impossible not to be. We are either pitied, patronised, judged or viewed as weak. We are not their equal anymore....